Finding the Fourth Proportional to 1,376.34, 1,898.37 and 911.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.34 : 1,898.37 = 911.22 : x
2. Step 2: Convert to fraction form
   1,376.34/1,898.37 = 911.22/x
3. Step 3: Cross multiply
   1,376.34x = 1,898.37 × 911.22
4. Step 4: Simplify right side
   1,376.34x = 1,729,832.71
5. Step 5: Solve for x
   x = 1,729,832.71/1,376.34
6. Step 6: Final answer
   x = 1,256.84